Tripod construction



Nov. 29, 1927. 1,650,747

K. W. THAI-HAMMER TRIPOD CONSTRUCTION Original Filed Feb. 14. 1921 2 sheets sheet 1 INVENTOR.

14 %H/ 21 dfzaffiaru "102/ 1 i 31 40, u M I AIZOR EY 'Nov. 29,1921. v V 1,650,747 K. W. THALHAMMER I TRIPOD CONSTRUCTION Orizinal Filed Feb. i4. 192 2 $heets-$heet 2 -fl nv zvrox.

A TTORNEK r Patented Nev. 19275.?

K R W. T ALH-AMMER; ormsimmes; \CAmeemim.

1111 013 eensmieiiom This ihvehtioh 'reii tes to tiipods (if the chaiaeter empieye'd, i011 simple, as su ports for camets; aird the inviitioii is espe- 5 tieil piet ire eaiiiei'as.

' It is reqiifte, in

that is relatively heayy b'e securely e'nehei'ed tte thesurface on which itrests; so that Ltiirn- 1 11;; 01 the drank 1 theeam'ere, wiiinot cause the tripod: tolslipi 111s, therefore, one

6f the'prin'cipal ebjeets'of this ihventien to provide 21 conlstr dtiohjwhieh will insuie against slippage of the triPoiLefftetlit has 15 been placed inthed'esired position upon e pp in r c s h, er xample, s 5011, turf, pblishedjflobrs, etc. i 1

lnether object 0i th viitieh istO p10- Vide foi retention 6f the angle at Whiehthe tripod claws engage thevsupploictihg siir'fziee, regardlessof the angle at which the tripod -1eg's z replaeed.

Another obj ct is m prdvici e a'tri ddbiaw the" 't'riped leg.

Another 0b Claw which can be edvz htageoflsly used either {on soil, tiirf, ioeksbi' on hard, sure faces,isuch, for example, as ipblishedl fleois which 11; 1s desired to a voidwmarilng.

. V The aceempaznying drawings 1 several forms of the invention:

Figure 1 is at side elevation of ejti i'ped 001v strii'ctioii embodying one for'm etthe invendicated by aw-flu, Figure2 I Figure 5 is a sectional (ligated by w 00 FigureQ.

Figure 6 is a side elevation of the lower end of a tripod leg showing a modified feiim (if the invention, brekei line's indieatihg the trifpoci ieg pesitiohecl 'et a, different angle than shewn ineoiid li ies Figf T i the tight tiie'reeh which is e apable of edjustment frelatijeltd tion, dotted lines indicating one ef thele'gs ievitien on line ini Figure 'e is e side elevation, partly i'nsec ti'eh, of a 1 elaiv attachment for T use 'on 1 p ished floors and the like. 1 i

Figure 6; with the shield i 11 'pl'ae On' the bew peints.

Figure 11 1311 15 1 view 01 the shield 'sh'bii nin "Fi ure 10.

" the adjustable legsat 2; The legs 2 seeket at through Whieheitends an axial screw 5 that s threaded iiite-a neloligztte put 6 extending between the lefg' members V I In Figuie" 1 the tfipotiiwd is "shown 1 membis 3 6f eeeh leg seat-in e tepei'ed The sta e-4 is joined by spaced new claw peint 10 that is ,ieniovably held in plejce by ztse-t screw 11 iiithe seat -The foot plate 12 a depted to be engaged by the .tioi edat acute angle reiatii'e to the idiigh retained in fp'laee'by a setscriew VVhn one of thepoihts shoiild"fail to 1111111 the r peint iirtibib1yW0u1d1 i the tripod, legit and ,4, the poiiittvill e gagejthe earth ate great enough angle to "seeureify aiiehoi "the tripod leg and prevent itslippiiigk.

"tuqlihal axislof the chiliv; Th'e phi'nt 15 is 'thetri od leg is eiteiitifeld as in Figure 1, j'beth I peiiits 1 3 nd may be readily brought into ehg tigeiiient with the s'uifti ce Whihh the tiipbd is to Stand,1111191119111- hggageiristslippingbf the tfipod 'lfegysilice, r 1' s an elevation .jsieFi ret 15mm i more uprightposition" indicated in broken lines at A, Figure 1, the claw 14 may be swung. alongside of .the tripod leg and; may

Figure ft,. ;the free end of the spring 16 "presses upon the upper face of the claw 14,

The claw thus tending to force thepoint15 toward the carth'orother'surface on which the tripod rests.' 1 t 14. is provided with a foot plate 20 forengagement'by the operators foot to R .thereby inove thefclaw 114: to force the point 15 into the surface on which the tripod rests.

Now referring more particularly to, the formof the invention, shown in Figures 6, 7, 9 and 10, the tripod legis of'slightly {different construction "from those shown in yFigure lfland'the two leg members or furcations 21 receivebetween them the ad ustabIe claw 22which is pivoted to the leg by a bolt 23 that extends through the leg members 21. Iheclaw 2 2 isiprovidediwith a. shorter-arm 24 and a longer arm 25, andthe arms 24: and 25 are provided at theirextremities with point: sockets 26, respectively, 1 in which are inserted the claw points 27. The points 27 are detachably secured 28 -in the sockets 26.

in place by set screws s From the forego ng it willg beclear. that, whereas in the formofthe invention shown,

{in Figures 1 to 5 only oneof the claw points n-is adjustable as to angularity relative to the tripod leg. in the form of the invention last described both points 27 are adjustable as to angularity relative to the tripod leg. The

points 27-:are positioned at an angle relative to the longitudinal axis of the claw 22 so as to tend to be driven the more securely into ;the earth when the tripod leg is set at an angle, as indicated in broken lines at B, F gure 6.

The claw 22is provided .with a foot plate y 29 -for'engagement bythe operators foot to adjust the claw 22 and press the points 27 .into ,firm. engagement with. the surface upon which the tripod rests.

In Figure8there is shown a: socket 30 attached to a lmoblike cushion 31 formed of isuitable yielding or. cushioning. material such, for instance, as rubber. The socket 30 is provided with a'set screw '32 whereby the j. socket "may be secured to the tripod point 10,

15, or 27 when the socketlhas been slipped thereon. Though but onecushion 31 and sockettherefor are shown, it is understood that they will beprovided for each point,

.50 that when the tripod is used upon a polished floor or other smooth level surface,

--, t.he,-fioor will not be marred and yet the tripod will be prevented from slipping.

earth is moreor less muddy.

In Figure ltlanother attachment is illus trated and comprises a shield in the form of a flat plate 33 provided with holes 3 l to receive thepoints 10, 15 or theipoints 27. Though the plate is only shown mounted on the points 27, it is clear that it can also he mounted on the"points10-,15, in the form of the invention shown in Figures 1 to 5,

if the points 10, 15 be brought into parallel ism with each other. In'the instance shown,

' the holes 34 ext'end through socket members 35 which are providedwith set screws 36 adapted to engage the claw points to prevent the plate from slippingtherefrom. t The shield 33 will be employed in conneotion with the claw points, ,as showniriFigure 10, when the tripod is used ,on i-a soft surface such as a lawn, for example, toprevent.the claw digging too deeply into the lawn and thus making unsightly holes therein. the claw points producing 'very small holesand not injuringthe lawn. 'Theshield 33 can also he used to advantageuwhen the .The pivot 13 shown in Figure 5 1s in the formof a bolt and passes througlraplain hole 37in one of, the ribs/7 and through a screw-threaded hole 38 in the other rib, and the bolt provided with a nut 39 which functions to lock it against unscrewing. By

tightening the bolt u'p,the furcations 40 of the claw 14 are pressed toward the ribs] to increase the friction so that the claw '14 will-be secured .in .anydes'ired position of adjustment. 'Ifdesired, washers 41 of felt or other friction-producing material may be interposed-between the ribs 7 and the furcations 40. The same construction is employed in, the form of the invention shown in Figures 6, 7, 9 and 10', the bolt 23 being provided with anut 42, and itnot being necessary to illustratein detail the other features, since the details of Figure 5 are sufficient to make clcartothose skilled in the art how to construct the hinge or pivotal mounting of the claw22.

I claim: 7' i 1.'A tripod construction comprising a head, legs pivoted to the hcad,claws pivotall'y connected" with the respective legs to permit of independentadjustment to differs ent angles relativeto the legs when the legs are positioned at different anglesrelative to the head. each of said claws provided-with a plurality of points, and shields. each shield provided with "holesto receive the points of one of the claws. v

p 2. A tripod construction comprising a head, legs pivoted to the head, claws hinged to the respective legs to permit of independent adjustment of the claws to 'di'flerent angles relative to the legs when the legs are positioned at different angles relative to the head, each claw provided with points positioned with their longitudinal uxesat an legs are positioned at difierent angles rela- 10 tive to the head, each claw provided With points positioned with their longitudinal axes at an angle to the longitudinal axis of said Claw and in parallelism with each other.

Signed at Los Angeles, California, this 7th day of February, 1921.

' KARL W. THALHAMMER. 

